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anonymous
 4 years ago
prov that sin3A=?
anonymous
 4 years ago
prov that sin3A=?

This Question is Closed

hba
 4 years ago
Best ResponseYou've already chosen the best response.1sin3A= something which we have to prove ?

ajprincess
 4 years ago
Best ResponseYou've already chosen the best response.2Prove sin3A=? sin3A=sin(A+2A) use sin(A+B)=sinAcosB+cosAsinB sin2A=2sinAcosA

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0no ur suppose to expand it

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0sin(2A+A)=sin2AcosA+cos2AsinA

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0BUT cos2A=cos^A+sin^A

ajprincess
 4 years ago
Best ResponseYou've already chosen the best response.2cos2A=cos^2Asin^2A =12sin^2A =2cos^2A1

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0OKAY put it in the equestn
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